Do you need to have a wailord and relicanth for the braille puzzle?

Yes, you need both Wailord and Relicanth to complete the braille puzzle in Pokémon Ruby, Sapphire, and Emerald. In the game, these two Pokémon must be placed in specific slots of your party to unlock the entrance to the underwater cave where you can catch the legendary Pokémon, Registeel, Regice, and Regirock. Their positions correspond to the ancient braille writing that indicates the need for these specific Pokémon.